import { ElementRef } from '@angular/core';
import * as i0 from "@angular/core";
export interface TreemapItem {
    label: string;
    value: number;
    color?: string;
}
interface LayoutItem extends TreemapItem {
    x: number;
    y: number;
    w: number;
    h: number;
    displayColor: string;
}
export declare class TreemapChartComponent {
    data: import("@angular/core").InputSignal<TreemapItem[]>;
    colors: import("@angular/core").InputSignal<string[]>;
    showExport: import("@angular/core").InputSignal<boolean>;
    itemClick: import("@angular/core").OutputEmitterRef<TreemapItem>;
    exportMenuOpen: import("@angular/core").WritableSignal<boolean>;
    tooltip: import("@angular/core").WritableSignal<{
        show: boolean;
        title: string;
        value: string;
        x: number;
        y: number;
        color: string;
    }>;
    svgEl: import("@angular/core").Signal<ElementRef<SVGElement> | undefined>;
    layoutRects: import("@angular/core").Signal<LayoutItem[]>;
    private subdivide;
    onItemEnter(item: LayoutItem, event: MouseEvent): void;
    onItemLeave(): void;
    onItemClick(item: LayoutItem): void;
    toggleExportMenu(event: MouseEvent): void;
    closeExportMenu(): void;
    onExport(type: 'json' | 'csv' | 'svg' | 'pdf'): void;
    exportToJson(): void;
    exportToCsv(): void;
    exportToSvg(): void;
    exportToPdf(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<TreemapChartComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<TreemapChartComponent, "ngx-treemap-chart", never, { "data": { "alias": "data"; "required": true; "isSignal": true; }; "colors": { "alias": "colors"; "required": false; "isSignal": true; }; "showExport": { "alias": "showExport"; "required": false; "isSignal": true; }; }, { "itemClick": "itemClick"; }, never, never, true, never>;
}
export {};